A kind of row metal vertical pipe penetrates structure floor sealing formwork device
By improving the sealing and formwork support device, and using formwork support assistants and formwork rods to support the template, the problems of incomplete sealing and sagging of rows of metal risers penetrating the structural floor slab were solved, achieving high-quality sealing effect and simple operation process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING URBAN CONSTR SIXTH GRP
- Filing Date
- 2025-07-28
- Publication Date
- 2026-06-23
AI Technical Summary
Existing technologies cannot guarantee the sealing quality of rows of metal risers penetrating structural floor slabs, resulting in leakage risks and poor installation appearance.
A sealing and formwork support device is adopted, which includes a template, a formwork support auxiliary device, and a formwork support rod. By dividing the template into two halves along the axis and supporting it with the formwork support auxiliary device and the formwork support rod, the template is ensured to be tightly attached to the top plate, realizing the lower formwork support method and avoiding incomplete sealing and sagging.
It improved the sealing quality, reduced the risk of leakage, simplified the operation process, reduced costs, and improved the sealing effect between the reserved opening and the pipe sleeve.
Smart Images

Figure CN224396058U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of formwork engineering, and in particular to a formwork support device for sealing off rows of metal risers penetrating structural floor slabs. Background Technology
[0002] In engineering construction, it is particularly important to seal the steel sleeves of rows of metal risers for water supply, heating, fire protection, drainage, etc., that pass through the structural floor slab or between the metal risers and the reserved openings in the structure. It is necessary to ensure that the steel sleeves are centered and that the bottom edge of the steel sleeves is flush with the top slab, and to ensure that the seal is tight to achieve the requirement of "zero leakage".
[0003] Existing formwork measures for sealing risers penetrating the top slab of the structure generally include the following two methods:
[0004] 1. Wire hoisting formwork: This method involves passing wire through the gap between the pre-reserved opening in the structure and the steel sleeve, and using wooden or extruded polystyrene board as the sealing template. The template is fixed by hoisting to seal the gap. However, when the wire used in this method passes through the gap between the pre-reserved opening in the structure and the steel sleeve, the wire may remain inside the sealing concrete during removal, which can easily cause the seal to be incomplete. If the wire rusts, there is a risk of leakage.
[0005] 2. PVC-specific sealing templates are used for formwork sealing. Existing PVC-specific sealing templates are designed for professional sealing of PVC drainage pipes and come in specifications such as φ50, φ75, φ110, and φ160. These templates do not match the outer diameter of steel pipes. Some steel pipe sizes do not have matching PVC sealing templates, and when fixed to the riser, the steel sleeve and the sealing concrete tend to sag during sealing, resulting in unsatisfactory sealing quality.
[0006] Existing conventional formwork or hanging formwork methods cannot guarantee the centering of the sleeve or the quality of the sealing, resulting in water leakage at the secondary sealing point of the roof slab and poor appearance of the pipe and sleeve installation. Utility Model Content
[0007] To address the aforementioned problems, this utility model provides a formwork support device for sealing off rows of metal risers penetrating structural floor slabs.
[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0009] This utility model discloses a formwork support device for sealing off rows of metal risers penetrating structural floor slabs, comprising:
[0010] A template having side-by-side pipe holes, the template being divided into two halves along its central axis, and the pipe holes being equally divided;
[0011] A formwork support device is installed on the template to connect two templates. The bottom of the formwork support device has a fixing sleeve.
[0012] Formwork support rods are used to insert into fixing sleeves to support the formwork.
[0013] This utility model discloses a formwork support device for sealing off rows of metal risers penetrating structural floor slabs. Further, the formwork support auxiliary device includes a fixing plate, which is installed on the template, and the fixing sleeve is fixedly installed on the fixing plate.
[0014] This utility model discloses a formwork support device for sealing and blocking rows of metal risers through structural floor slabs. Furthermore, the fixing plate and fixing sleeve are divided into two equal halves along the central axis of the template. Nuts are symmetrically provided on the two halves of the fixing plate, and the two halves of the fixing plate are connected and fixed by bolts.
[0015] This utility model discloses a formwork support device for sealing and blocking rows of metal risers penetrating structural floor slabs. Furthermore, the nuts are respectively set on both sides of the fixing sleeve along the length of the dividing line.
[0016] This utility model discloses a formwork support device for sealing off rows of metal risers penetrating structural floor slabs. Furthermore, the fixing plate is fixed to the template by screws.
[0017] This utility model discloses a formwork support device for sealing off rows of metal risers penetrating structural floor slabs. Furthermore, the formwork support rod is a tubular structure with a formwork adjustment screw installed at its lower end for adjusting the length of the formwork support rod.
[0018] This utility model discloses a formwork support device for sealing off rows of metal risers penetrating structural floor slabs. Further, the formwork adjustment screw includes a base, a screw, and an adjustable nut installed on the screw. The formwork support rod is sleeved on the screw and supported by the adjustable nut.
[0019] This utility model discloses a formwork support device for sealing and blocking rows of metal risers penetrating structural floor slabs. Furthermore, the formwork support auxiliary device is set on the bottom surface at both ends of the template along its length.
[0020] Compared with the prior art, this utility model has the following advantages:
[0021] 1. This application changes the formwork method from hanging formwork to bottom formwork when sealing rows of metal risers penetrating structural floor slabs by using a formwork support device. This allows for convenient and secure support of the wooden formwork for sealing under the structural floor slab through which the steel risers pass. During sealing, the steel sleeve can be adjusted to keep it centered and prevent sagging. Furthermore, the concrete can be vibrated and compacted during sealing, preventing sagging and reducing the risk of leakage. This effectively improves the sealing quality. The formwork and support pipe can be easily connected and combined using the formwork support device, simplifying the formwork process and improving the sealing quality between the reserved opening and the pipe sleeve.
[0022] 2. The formwork support device of this application has a simple structure, is easy to operate, convenient to assemble and disassemble, easy to store, and easy to recycle;
[0023] 3. This device can be manufactured in one go or in batches for engineering projects. Only vulnerable parts such as screws and self-tapping screws need to be replenished. It has low wear and tear, can be reused in multiple projects, has strong versatility, and low overall cost.
[0024] 4. Made of steel plates and steel pipes, it is not easily damaged and can be used multiple times.
[0025] The present invention will be further described below with reference to the accompanying drawings. Attached Figure Description
[0026] Figure 1 This is an elevation view of the sealing formwork of this utility model;
[0027] Figure 2 This is a bottom view of the sealing formwork of this utility model;
[0028] Figure 3 This is a diagram showing the combination of the formwork support aid and the template of this utility model;
[0029] Figure 4 This is a connection diagram of the formwork support auxiliary device of this utility model;
[0030] Figure 5 This is a cross-sectional view of the formwork support device of this utility model.
[0031] Figure label:
[0032] 1. Template; 2. Formwork support device; 2.1. Fixing plate; 2.2. Fixing sleeve; 2.3. Nut; 2.4. Bolt; 3. Formwork support rod; 4. Metal riser; 5. Formwork adjustment screw; 6. Floor slab; 7. Pipe hole. Detailed Implementation
[0033] like Figure 1 As shown, this utility model discloses a formwork support device for sealing rows of metal risers penetrating structural floor slabs, including a template 1, a formwork support auxiliary device 2, and a formwork support rod 3. In this embodiment, the template 1 is preferably a wooden template. Pipe holes 7 are opened side by side according to the diameter of the metal risers 4 that need to be sealed on site. The size of the pipe holes 7 matches the diameter of the metal risers 4. The template 1 is divided into two halves along its central axis, and all the pipe holes are divided equally.
[0034] Two formwork support devices 2 are provided and symmetrically installed on the bottom surfaces of both sides of the template 1. Each formwork support device 2 includes a fixing plate 2.1 and a fixing sleeve 2.2 fixedly installed on the fixing plate 2.1. The fixing plate 2.1 is used to install on the template 1. The fixing plate 2.1 and the fixing sleeve 2.2 are divided into two halves along the central axis of the template 1. Nuts 2.3 are symmetrically provided on the plate surfaces of the two halves of the fixing plate 2.1. The two halves of the fixing plate 2.1 are connected and fixed by bolts 2.4. The nuts 2.3 are respectively provided on both sides of the fixing sleeve 2.2 along the length of the dividing line. The fixing plate 2.1 is fixed to the template 1 by screws.
[0035] The formwork support rod 3 is used to insert the fixing sleeve 2.2 to support the template 1. The formwork support rod 3 is a tubular structure, and a formwork adjustment screw 5 is installed at its lower end to adjust the length of the formwork support rod 3. The formwork adjustment screw 5 includes a base, a screw and an adjustable nut 2.3 installed on the screw. The formwork support rod 3 is sleeved on the screw and supported by the adjustable nut 2.3.
[0036] The construction method is as follows:
[0037] 1) Based on the perforated floor slabs 6 and rows of metal risers 4 that need to be sealed on site, make corresponding wooden templates 1 and divide them into two pieces along their central axis.
[0038] 2) Fix the four formwork support devices 2 to the two sides of the template 1 with screws, so that the splicing edge of the formwork support device 2 is aligned with the splicing edge of the template 1, so that the two templates 1 can be connected together by bolts.
[0039] 3) Install two templates 1 under the top plate where the row of risers that need to be sealed passes through, and connect and fix the templates 1 with bolts.
[0040] 4) Use the support rod 3 and the support adjusting screw 5 to insert into the fixing sleeve 2.2 to support the template 1 so that the template 1 is tightly attached to the top plate.
[0041] 5) Seal the reserved openings and rows of metal risers 4. After the concrete has solidified, remove the formwork 1 and formwork support 2 for use in other locations, making them easy to reuse.
[0042] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.
Claims
1. A formwork support device for sealing off rows of metal risers penetrating structural floor slabs, characterized in that, include: Template (1) having pipe holes (7) arranged side by side, the template (1) being divided into two halves along its central axis and the pipe holes (7) being divided equally; A formwork support device (2) is installed on the template (1) to connect the two templates (1). The bottom of the formwork support device (2) has a fixing sleeve (2.2). The formwork support rod (3) is used to insert the fixing sleeve (2.2) to support the template (1).
2. The formwork support device for sealing and blocking rows of metal risers penetrating structural floor slabs according to claim 1, characterized in that, The formwork support device (2) includes a fixing plate (2.1), which is installed on the template (1), and the fixing sleeve (2.2) is fixedly installed on the fixing plate (2.1).
3. The formwork support device for sealing and blocking rows of metal risers penetrating structural floor slabs according to claim 2, characterized in that, The fixing plate (2.1) and the fixing sleeve (2.2) are divided into two halves along the central axis of the template (1). Nuts (2.3) are symmetrically provided on the two halves of the fixing plate (2.1), and the two halves of the fixing plate (2.1) are connected and fixed by bolts (2.4).
4. The formwork support device for sealing and blocking rows of metal risers penetrating structural floor slabs according to claim 3, characterized in that, The nuts (2.3) are respectively disposed on both sides of the fixing sleeve (2.2) along the length of the dividing line.
5. A formwork support device for sealing and blocking rows of metal risers penetrating structural floor slabs according to claim 2, characterized in that, The fixing plate (2.1) is fixed to the template (1) by screws.
6. The formwork support device for sealing and blocking rows of metal risers penetrating structural floor slabs according to claim 1, characterized in that, The formwork support rod (3) is a tubular structure, and a formwork adjustment screw (5) is installed at its lower end to adjust the length of the formwork support rod (3).
7. A formwork support device for sealing and blocking rows of metal risers penetrating structural floor slabs according to claim 6, characterized in that, The formwork adjustment screw (5) includes a base, a screw and an adjustable nut installed on the screw, and the formwork support rod (3) is sleeved on the screw and supported by the adjustable nut.
8. The formwork support device for sealing and blocking rows of metal risers penetrating structural floor slabs according to claim 1, characterized in that, The formwork support device (2) is located on the bottom surface at both ends of the template (1) along its length.